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Custom Button on classic show Unexpected identifier
Facing issue : a problem with the onclick javascript for this button or link was encountered unexpected identifier
And :
window.parent.parent.location.href="/_ui/core/email/author/EmailAuthor?p2_lkid={!Case.ContactId}&rtype=003&p3_lkid={!Case.Id}&retURL=/{!Case.Id}&p26=0D2A00000008OjV:ciscotraining@external.cisco.com:Cisco%20Certification%20Support&p6={!Case.Response_Subject__c}";
And :
window.parent.parent.location.href="/_ui/core/email/author/EmailAuthor?p2_lkid={!Case.ContactId}&rtype=003&p3_lkid={!Case.Id}&retURL=/{!Case.Id}&p26=0D2A00000008OjV:ciscotraining@external.cisco.com:Cisco%20Certification%20Support&p6={!Case.Response_Subject__c}";